Improvement in brick-machines



W. MENDHAM 8a 0., CHAMBERS; Jr.

BRICK MACHINE.

No. 109,034. Patented Nov. 8, 1870.

haunt dffirt.

WILLIAM MENDHAM 'AND CYRUS CHAMBERS, JR, OFPHILADELPHIZA, PENNSYLVA-NIA, ASSIGNORS TO EDWIN CHAMBERS AND CYRUS GHAMBERQJR, OE SAME PLACE.

teats Patent No. 109,034, dated November 8, 1870.

IMPROVEMENT IN BRICK-MACHINES.

"The Schedule referred-to than Lottmjetmt and making part of the lame.

. To all whom it may concern:

' new and useful Improvement in Brick-Machines; and

we do hereby declare 'the following to be a full and correctdescription-of the same, reference being had to the accompanyingdrawing, in which- Figure 1 .is a horizontal section of the die andformer, on line a: a: of fig. 2';

Figure 2 is an end elevation of our improved former and die; and

Figure 3 is-a section, on line 3 y of fig. 2,-of a portron of theformer, showing the arrangement of the steam-space.

,The same letter marks thesame part in the severa figures where itoccurs. Our invention relates to that class of brick-machines m whichclay is forced in a continuous bar-through a die, and then cut intoproper lengths for bricks. Such a machine is described in the patent ofOyrus Oha'm-.

hers, jr., dated September 2, 1863.

Our improvement is in thoseportions of the machine known asthe-former'and die, through which the clay passes immediately'prior toits exit from the pugging and tempering-chamber.

'It consists in recessing the outer end of the. former, and mserting in.it a die, which forms a thin lining, preferably of steel, such diebeing held inplace and adjusted by means of set-screws, and beingremovable,

at pleasure, for renewal or repair, withoutv involving the removal ofany portion of the former.

It further .consists in giving such a form to the steam-chamber of theformer as .to supply the greatest heat to tile angles of the die, all ashereinafter more fully set forth.

The construction of our improved die and former is clearly shown in thedrawing. I

The former A is intended to be attached to the end of thepugging-chamber by means of the hinge O and bolts passing through thelugs B B B.

' It is provided with a chamber, E, through which steam is caused topass in' the direction shown by the arrows, entering hyapipe inserted atF, and escaping through another pipe inserted at G.

The construction of this steam-chamber is such, as shown in section infig. 3, that the steam is admitted to the corners of the die where thefriction of the passing 'clay is greatest, and is kept from the middleportion of the sides of the die, where the friction is least, the objectbeing to equalize the friction, and thus prevent the uneven strain uponthe bar of clay, which would tend to weaken its structure and toroughen.

the edges of the bricks.

- An oblong shouldered recess, R, is made in the end of the former A,which receives a die,'D,.of corre-' sponding shape, forming a thin steellining to the mouth of t-lie'former.

The inner rimof this die rests upon the shoulder s s of recess It. 0

Its outer rim is beveled, as shown, the beveled surface aifording abearing for the inner ends of the setscrews a aa. a, hywhich the die isheld in place If the die should be slightly smaller than the recess R, a

the screws 0, aa a afford the means of adjusting it accurately inrelation to the opening in the former, from which the clay enters thedie.

In a brick-machine of the character referred to above .the die is foundto wear more rapidly than other parts of the machine. Its convenient andeconomical replacement-hence becomes a matter of primary con-.sideration.

Having-thus fully described our invention, What we claim, and desire tosecure by Letters Patent, is-- 1. The hollow former A of abrick-machine, having WILLIAM MENDHAM. CYRUS CHAMBERS, JR. Witnesses: v

THQBWALDOHR. Damnone, W. Peron DAVIS.

